Zero-Zero

What It Means

"Zero-zero" has no legal definition — it is shorthand used by producers and sommeliers to describe wines that combine two commitments: no added sulfur dioxide at any point in production (zero SO₂) and no dosage after disgorgement (zero sugar). The result is champagne in its most unmediated form.

The Challenge

Each commitment is demanding on its own. Together, they require:
- Pristine, fully ripe fruit with no disease (rot introduces spoilage organisms that SO₂ would otherwise suppress)
- Exceptional cellar hygiene throughout
- Fermentation that completes cleanly without the safety net of added sulfur
- Base wines with sufficient acidity and ripeness to stand without the sweetness of dosage
- Reliable cold chain management after bottling

The Argument

The counterintuitive truth about champagne is that it can tolerate zero-zero production better than most still wines. The dissolved CO₂ acts as a natural preservative. The high acidity provides a hostile environment for spoilage organisms. The pressure seal is near-hermetic.

Romain Henin produces all his champagnes zero-zero. The results — vivid, precise, expressive — make the argument more convincingly than any description.